Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 561 · 40 sums

The method (Grow it every year): Year by year: new amount = amount × (100 + R) ÷ 100. Amount after T years = P × (1 + R/100)ᵀ; compound interest = amount − P. A value falling by R% each year: × (100 − R) ÷ 100 every year. For 2 years, CI − SI = P × R × R ÷ 10000.

1. 1.A town has 25700 people. The population grows by 12% every year. What will the population be after 1 year?
2. 2.Find the compound interest on ₹57000 at 10% per year for 3 years, compounded every year (in ₹).
3. 3.What is the difference between the compound interest and the simple interest on ₹5000 at 4% per year for 2 years (in ₹)?
4. 4.What amount will ₹57600 grow to in 2 years at 25% per year compound interest (in ₹)?
5. 5.What amount will ₹11500 grow to in 1 year at 10% per year compound interest (in ₹)?
6. 6.What is the difference between the compound interest and the simple interest on ₹9200 at 15% per year for 2 years (in ₹)?
7. 7.What amount will ₹32000 grow to in 3 years at 10% per year compound interest (in ₹)?
8. 8.What amount will ₹44100 grow to in 1 year at 4% per year compound interest (in ₹)?
9. 9.A scooter is worth ₹45100. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
10. 10.What amount will ₹42600 grow to in 1 year at 8% per year compound interest (in ₹)?
11. 11.What amount will ₹52500 grow to in 2 years at 8% per year compound interest (in ₹)?
12. 12.Find the compound interest on ₹22500 at 8% per year for 2 years, compounded every year (in ₹).
13. 13.Find the compound interest on ₹29200 at 25% per year for 2 years, compounded every year (in ₹).
14. 14.Find the compound interest on ₹7500 at 12% per year for 2 years, compounded every year (in ₹).
15. 15.Find the compound interest on ₹16000 at 10% per year for 3 years, compounded every year (in ₹).
16. 16.What amount will ₹47000 grow to in 3 years at 20% per year compound interest (in ₹)?
17. 17.Find the compound interest on ₹56900 at 5% per year for 1 year, compounded every year (in ₹).
18. 18.What amount will ₹24000 grow to in 3 years at 15% per year compound interest (in ₹)?
19. 19.A scooter is worth ₹43000. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
20. 20.A town has 32200 people. The population grows by 10% every year. What will the population be after 2 years?
21. 21.Find the compound interest on ₹59600 at 4% per year for 1 year, compounded every year (in ₹).
22. 22.A town has 50000 people. The population grows by 8% every year. What will the population be after 2 years?
23. 23.What amount will ₹40000 grow to in 3 years at 5% per year compound interest (in ₹)?
24. 24.A scooter is worth ₹45900. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
25. 25.A scooter is worth ₹20300. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
26. 26.A town has 37500 people. The population grows by 12% every year. What will the population be after 2 years?
27. 27.What is the difference between the compound interest and the simple interest on ₹48400 at 25% per year for 2 years (in ₹)?
28. 28.What amount will ₹35500 grow to in 1 year at 12% per year compound interest (in ₹)?
29. 29.Find the compound interest on ₹8400 at 5% per year for 2 years, compounded every year (in ₹).
30. 30.What amount will ₹38400 grow to in 2 years at 10% per year compound interest (in ₹)?
31. 31.What amount will ₹48100 grow to in 1 year at 4% per year compound interest (in ₹)?
32. 32.A scooter is worth ₹5000. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
33. 33.Find the compound interest on ₹29400 at 10% per year for 1 year, compounded every year (in ₹).
34. 34.What amount will ₹10000 grow to in 2 years at 4% per year compound interest (in ₹)?
35. 35.A town has 16000 people. The population grows by 15% every year. What will the population be after 3 years?
36. 36.A scooter is worth ₹50000. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
37. 37.What amount will ₹17800 grow to in 1 year at 20% per year compound interest (in ₹)?
38. 38.What is the difference between the compound interest and the simple interest on ₹35000 at 12% per year for 2 years (in ₹)?
39. 39.What amount will ₹34700 grow to in 1 year at 12% per year compound interest (in ₹)?
40. 40.What is the difference between the compound interest and the simple interest on ₹52500 at 8% per year for 2 years (in ₹)?

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